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author | ed <ed@FreeBSD.org> | 2011-12-31 19:01:48 +0000 |
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committer | ed <ed@FreeBSD.org> | 2011-12-31 19:01:48 +0000 |
commit | 0ece074de9d070fa87b7f58f9e96bce63db862d8 (patch) | |
tree | 21b838383a703c249dd4f0180c8566c40f70e0e3 /contrib/compiler-rt/README.txt | |
parent | 55bd70ed9a164b6b2d84037c8362ff3725ff294b (diff) | |
parent | 6a5f9bc9ae3205be8bb5570b86a509fcd01a9db6 (diff) | |
download | FreeBSD-src-0ece074de9d070fa87b7f58f9e96bce63db862d8.zip FreeBSD-src-0ece074de9d070fa87b7f58f9e96bce63db862d8.tar.gz |
Upgrade libcompiler_rt to upstream revision 147390.
This version of libcompiler_rt adds support for __mulo[sdt]i4(), which
computes a multiply and its overflow flag. There are also a lot of
cleanup fixes to headers that don't really affect us.
Updating to this revision should make it a bit easier to contribute
changes back to the LLVM developers.
Diffstat (limited to 'contrib/compiler-rt/README.txt')
-rw-r--r-- | contrib/compiler-rt/README.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/contrib/compiler-rt/README.txt b/contrib/compiler-rt/README.txt index cbeb10c..b37c0ae 100644 --- a/contrib/compiler-rt/README.txt +++ b/contrib/compiler-rt/README.txt @@ -106,6 +106,15 @@ si_int __mulvsi3(si_int a, si_int b); // a * b di_int __mulvdi3(di_int a, di_int b); // a * b ti_int __mulvti3(ti_int a, ti_int b); // a * b + +// Integral arithmetic which returns if overflow + +si_int __mulosi4(si_int a, si_int b, int* overflow); // a * b, overflow set to one if result not in signed range +di_int __mulodi4(di_int a, di_int b, int* overflow); // a * b, overflow set to one if result not in signed range +ti_int __muloti4(ti_int a, ti_int b, int* overflow); // a * b, overflow set to + one if result not in signed range + + // Integral comparison: a < b -> 0 // a == b -> 1 // a > b -> 2 |